Retsam

const { Project } = require("ts-morph");

/** 
 * Loops through all TSX files and removes unused imports, 
 * which will cleanup the `import React from "react"` if it's no longer needed
*/

const project = new Project({
    tsConfigFilePath: "tsconfig.json",
});

Retsam

type LoadState<T> = 
    | { state: "loading" }
    | { state: "loaded", data: T }
    // Not all usecases will have an error state, in which case it's fine to omit it here.
    | { state: "error", err: string };

type ExamplePayload = string;
const ExampleComponent = () => {
    const [ loadState, setLoadState ] = useState<LoadState<ExamplePayload>>({ state: "loading" });
    useEffect(() => {

Retsam

import { Dispatch, useReducer, useEffect } from "react";
import { produce } from "immer";

//=======
// State
//=======
export type ExampleState = {
    name: string;
    level: number;
    saved: false;

Retsam

import c from "./c";

export default "a" + c;

Retsam

import v1 from "./v1"
import v2 from "./v2"

import express from "express";

var app = express();

app.use("/v1", v1);
app.use("/v2", v2);

Retsam

//Expected output: A B C  (see http://www.es6fiddle.net/ice1qchm/)
//Actual output from Babel: A C

//ES5 legacy code

function A () {
  console.log("A");
}

function B () {